Smart watch



FIG. 1 is a front view of a smart watch showing a first embodiment of our new design.

FIG. 2 is a perspective view.

FIG. 3 is a perspective view of a smart watch showing a second embodiment of our new design.

FIG. 4 is a second perspective view; and,

FIG. 5 is a third perspective view.

The features shown in broken lines in the drawing depict environmental subject matter and unclaimed borders and form no part of the claimed design. 

CLAIM The ornamental design for a smart watch, as shown and described. 